0.3-3.2mm M7/M8x0.75mm Keyless Chuck Universal Chuck For Electric Grinder Drill Adapter

Description:
0.3-3.2mm M7/M8x0.75mm Keyless Chuck Universal Chuck For Electric Grinder. 
 
The meaning of the 7x0.75/8x0.75: 7/8 refers to the Dremel grinding machine shaft outer diameter
is 7mm/8mm, 0.75 is screw thread pitch 0.75mm, your Dremel grinding machine shaft outer diameter
measurements is 7mm or 8mm, you can consider it. 
 
Specifications:
Material:plastic+metal; 
Short chuck size:1.8x1.4cm(L x W); 
Long chuck Size:2.2x1.1cm(L x W); 
Inner Diameter:0.6cm; 
Gripping range:0.3-3.2mm(M7); 
Gripping range:0.3-3.5mm(M8); 
 
Size: M7 x 0.75mm /  M8 x 0.75mm; 
M8 x 0.75mm specification can be equipped with electric grinder and  flexible shaft output shaft diameter of 7.9mm. 
M7 x 0.75mm specification can be equipped with electric grinder and  flexible shaft output shaft  diameter of 6.9mm. 
 
Feature:
Keyless Drill Bit Chuck Quick Change Adapter Converter. 
Faster Bit Swaps Multi Chuck Keyless for Rotary Tools. 
Multi Keyless Chuck For Shaft Rotary Tools. 
This multi chuck allows you to quickly and easily change accessories on your Dremel grinder. 
Corded Rotary Tools without changing collets. 
Heat treated & tempered high-carbon steel for durability; rust-resistant black oxide finish. 
Universal chuck screwed directly in a small flexible shaft to the output shaft can be used, easy to use, 
without auxiliary tools. 
 
How to choose the length of the chuck: 
1.If your drill rod diameter is relatively small, you can choose the long tail. 
2.If your drill diameter is relatively large size (close to 3.2mm), Long and short also can be used. 
 
Note:
Please note that the package includes one chuck only. 
 
Package Included:
1x Keyless Chuck